Aftermarket wiring kits...

Who makes a good one? What one to avoid? Would prefer one with the ends still loose. Going to start screwing around with our Dart, funds permitting. Looking for a basic harness, one that I will be able to tie the harness from a modern, from this century, motor/trans ECU to...
I have seen a few threads from folks who have used a few different companies but can't seem to find the threads...